<?PHP //$Id: block_tags.php,v 1.3.2.5 2008/03/03 11:41:04 moodler Exp $

class block_tags extends block_base {
	function init() {
		$this->version = 2007101509;
		$this->title = get_string('blocktagstitle', 'tag');
	}

	function instance_allow_multiple() {
		return true;
	}

	function has_config() {
		return false;
	}

	function applicable_formats() {
		return array('all' => true);
	}

	function instance_allow_config() {
		return true;
	}

	function specialization() {

		// load userdefined title and make sure it's never empty
		if (empty($this->config->title)) {
			$this->title = get_string('blocktagstitle','tag');
		} else {
			$this->title = $this->config->title;
		}
	}

	function get_content() {

		global $CFG, $SITE, $COURSE, $USER;

		if (empty($CFG->usetags)) {
			$this->content->text = '';
			return $this->content;
		}

		if (empty($this->config->numberoftags)) {
			$this->config->numberoftags = 80;
		}

		if ($this->content !== NULL) {
			return $this->content;
		}

		if (empty($this->instance)) {
			$this->content = '';
			return $this->content;
		}

		$this->content = new stdClass;
		$this->content->footer = '';

		/// Get a list of tags

		require_once($CFG->dirroot.'/tag/lib.php');

		$this->content->text = tag_print_cloud($this->config->numberoftags, true);

		return $this->content;
	}

	function instance_config_print() {
		global $CFG;

	/// set up the numberoftags select field
		$numberoftags = array();
		for($i=1;$i<=200;$i++) $numberoftags[$i] = $i;

		if (is_file($CFG->dirroot .'/blocks/'. $this->name() .'/config_instance.html')) {
			print_simple_box_start('center', '', '', 5, 'blockconfigglobal');
			include($CFG->dirroot .'/blocks/'. $this->name() .'/config_instance.html');
			print_simple_box_end();
		} else {
			notice(get_string('blockconfigbad'), str_replace('blockaction=', 'dummy=', qualified_me()));
		}
	}
}

?>
